An article published in the journal “Monthly Notices of the Royal Astronomical Society” reports a study on the history of Betelgeuse observations which concludes that 2,000 years ago this star was yellow in color and not red. A team of researchers led by Professor Ralph Neuhäuser of the German University of Jena examined ancient astronomical documents that report observations conducted in various parts of the world where Betelgeuse is described in a very different way from how it appears today. The conclusion is that it has only recently entered its red giant phase in astronomical terms. Reconstructing this star’s history offers information on its evolution that helps to predict its future changes.